US8299399B2 - Device for connecting metal sheet at the edges - Google Patents

Device for connecting metal sheet at the edges Download PDF

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Publication number
US8299399B2
US8299399B2 US12/598,496 US59849608A US8299399B2 US 8299399 B2 US8299399 B2 US 8299399B2 US 59849608 A US59849608 A US 59849608A US 8299399 B2 US8299399 B2 US 8299399B2
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US
United States
Prior art keywords
lever
folding
operating position
tool
welding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related, expires
Application number
US12/598,496
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English (en)
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US20100089892A1 (en
Inventor
Peter Cornelius
Uwe Feis
Michael Klos
Stefan Leidinger
Thomas Ralle
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ThyssenKrupp System Engineering GmbH
Original Assignee
ThyssenKrupp System Engineering GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
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Assigned to THYSSENKRUPP DRAUZ NOTHELFER GMBH reassignment THYSSENKRUPP DRAUZ NOTHELFER GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CORNELIUS, PETER, FEIS, UWE, KLOS, MICHAEL, LEIDINGER, STEFAN, RALLE, THOMAS
Publication of US20100089892A1 publication Critical patent/US20100089892A1/en
Assigned to THYSSENKRUPP SYSTEM ENGINEERING GMBH reassignment THYSSENKRUPP SYSTEM ENGINEERING GMBH MERGER (SEE DOCUMENT FOR DETAILS). Assignors: THYSSENKRUPP DRAUZ NOTHELFER GMBH
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Publication of US8299399B2 publication Critical patent/US8299399B2/en
Expired - Fee Related legal-status Critical Current
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/02—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/02—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder
    • B21D39/021—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder for panels, e.g. vehicle doors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K11/00—Resistance welding; Severing by resistance heating
    • B23K11/10—Spot welding; Stitch welding
    • B23K11/11—Spot welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K11/00—Resistance welding; Severing by resistance heating
    • B23K11/14—Projection welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K11/00—Resistance welding; Severing by resistance heating
    • B23K11/30—Features relating to electrodes
    • B23K11/31—Electrode holders and actuating devices therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/006—Vehicles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49616—Structural member making
    • Y10T29/49622—Vehicular structural member making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53709—Overedge assembling means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53709—Overedge assembling means
    • Y10T29/53787—Binding or covering
    • Y10T29/53791—Edge binding

Definitions

  • the invention relates to a device for connecting of metal sheets at the edges, particularly body sheet metal in automobiles.
  • a folding method on the one hand and a folding machine on the other hand have become known through U.S. Pat. No. 5,611,133 A as well as U.S. Pat. No. 5,752,304 A.
  • An exterior and an interior preformed metal panel are positioned between lower and upper die halves, wherein the die halves are subsequently jointed and the preformed panels are restrained within the die.
  • a pre-folding of a corner area of the exterior metal panel is performed subsequently. This process is followed by a finish folding process of the pre-folded area.
  • Provided in a non-folded area is at least one welding facility that joins both metal sheets by spot welding.
  • WO 99/03634 discloses a method and a device for welded joining of metal parts overlapping each other. Proposed therein is a resistance welding process for welding connection of metal sheets, with one end area of a metal sheet being folded around the other metal sheet. Accommodated in the area of the folding machine is at least one welding head comprised of an electrode with welding tip. In the folded area, one of the metal sheets has a kind of a projection. The connection is now achieved in that the welding head exerts a force on the fold so that the fold is fixed between the electrode and a backing plate. Subsequently, a pulsating welding current is generated that joins the two metal sheets with each other.
  • a method and a device for establishing a projection welding connection between metal sheet parts has become known through EP 1 038 627 BI.
  • a projection having a triangular cross-section is preformed in one of the metal sheets to be welded.
  • the metal sheet plates are laid one above the other so as to overlap each other.
  • a fold is generated in the area of the projection.
  • the metal sheet plates are welded together at the point of the projection by applying an electric current pulse of short duration, with the electric current being supplied from the side of the pressure unit to the metal sheet plate lying on top and being discharged from the metal sheet plate lying at bottom.
  • DE 199 27 208 B4 discloses a method and a device for connecting metal sheets at the edges, more particularly of car body metal sheets in automobile manufacturing, with the edge of an exterior metal sheet plate being folded beyond the edge of an interior metal sheet plate, and wherein the edges are pressed together and wherein the edge of at least one of the metal sheet plates is provided with embossed projections prior to folding.
  • a device for connecting metal sheets at the edges, more particularly of car body metal sheets in automobiles said device being comprised at least of a folding bed to receive at least two metal sheets, and furthermore comprised of folding jaws functionally connected to the pertinent folding jaw supports as well as at least comprising a thermal joining tool and at least a mass electrode, with at least the joining tool being not attached to the folding jaw, and said device comprising a lever oriented away from the folding bed and serving as linear feed device, and wherein said lever has a center of rotation outside the folding bed about which the joining tool can swivel in the manner of a knee lever into an operating and/or non-operating position.
  • FIG. 1 is a top view onto a partial area of a folding machine
  • FIG. 2 is a partial sectional view of the joining tool
  • FIG. 3 is a partial sectional view of the joining tool
  • FIG. 4 is a partial sectional view of the joining tool
  • FIG. 1 in a top view shows a partial area of a folding device 1 .
  • a folding bed 2 folding jaws 3 , folding jaw supports 4 as well as joining tool 5 which in this case is configured as a welding tool.
  • the joining tools can equally be configured as a soldering tool, too.
  • a welding electrode 7 is provided at the free end of a lever 6 (welding arm), see FIG. 4 .
  • a lever element 8 mass arm
  • the lever 6 and the lever element 8 , 8 ′ are arranged on a common axis 10 .
  • FIGS. 2 to 4 show various partial views and/or sections of the joining tools.
  • Lever 6 and lever element 8 can tilt in the manner of a knee lever about the swiveling axis 10 ′ of axis 10 .
  • FIG. 2 shows the non-operating position of joining tool 5 .
  • a forward stroke cylinder 11 functionally connected to a bottom wedge 13 having an inclined plane 12 is utilized for simultaneous swiveling of lever 6 and lever element 8 about swiveling axis 10 ′.
  • a vertically arranged guide bolt 14 with an upper cap 15 co-acts with a top wedge 17 comprised of a second inclined plane 16 .
  • Helical springs 18 (merely shown indicatively) are provided in the area of guide bolt 14 .
  • a backward stroke cylinder 19 the piston rod 20 of which carries a cover 21 at its free end, is positioned above lever 6 .
  • FIG. 3 shows the set-up of welding electrode 7 onto fold 22 .
  • Lever 6 including lever element 8 has now been swiveled about swiveling axis 10 ′ into its operating position, with the greatest force being applied here onto fold 22 .
  • FIG. 4 shows the process of welding in which welding electrode 7 presses fold 22 together and in which this area is thermally joined.
  • lever 6 has reached its maximum swiveling angle.
  • Two metal sheets 23 , 23 ′ which are connected to each other in the area of fold 22 rest on the folding bed 2 within the device 1 .
  • Lever 6 is guided in the area of a recess 23 provided in the folding jaw 3 in the direction of the fold 22 .
  • Beneath lever 6 respectively beneath lever element 8 , there is a hinged lever 25 provided with axis 10 .
  • the welding electrodes 7 are now set onto fold 22 .
  • each helical spring ( 18 ) By the existing force of forward stroke cylinder 11 , a pre-tensioning force is built-up in each helical spring ( 18 ). This force is necessary to press the fold 22 at the exterior metal sheet onto an embossed projection in the interior metal sheet 23 and to establish an electrical contact between both metal sheets 23 , 23 ′ which is required for welding.
  • an electric current pulse at all arms 6 , 8 , 8 ′ carrying electric current both parts are welded with each other by means of ohmic transition resistance between fold 22 of exterior metal sheet 23 ′ and embossed projection in the interior metal sheet 23 .
  • the process force required for resistance welding is assured by a post-setting of all welding unit components carrying electric current, i.e.
  • welding electrodes 7 , 9 , 9 ′ and welding arms 6 , 8 , 8 ′ All components carrying electric current are electrically isolated versus the bearing rack.
  • fold 22 of exterior metal sheet 23 ′ rests on interior metal sheet 23 , the supply of electric current is interrupted and welding has been completed.
  • the backward stroke cylinder 19 moves downwards, thus lifting the welding electrodes 7 , 9 via welding arms 6 , 8 and hinged lever 25 from metal sheets 23 , 23 ′ and arresting them.
  • the folding bed 2 again moves downwards and the folding process is completed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Resistance Welding (AREA)
  • Straightening Metal Sheet-Like Bodies (AREA)
  • Press Drives And Press Lines (AREA)
US12/598,496 2007-06-01 2008-04-10 Device for connecting metal sheet at the edges Expired - Fee Related US8299399B2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102007025854 2007-06-01
DE102007025854A DE102007025854B3 (de) 2007-06-01 2007-06-01 Vorrichtung zum randseitigen Verbinden von Blechen
DE102007025854.4 2007-06-01
PCT/EP2008/002809 WO2008148440A1 (de) 2007-06-01 2008-04-10 Vorrichtung zum randseitigen verbinden von blechen

Publications (2)

Publication Number Publication Date
US20100089892A1 US20100089892A1 (en) 2010-04-15
US8299399B2 true US8299399B2 (en) 2012-10-30

Family

ID=39467192

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/598,496 Expired - Fee Related US8299399B2 (en) 2007-06-01 2008-04-10 Device for connecting metal sheet at the edges

Country Status (10)

Country Link
US (1) US8299399B2 (es)
EP (1) EP2155414A1 (es)
KR (1) KR20100015547A (es)
CN (1) CN101674903B (es)
BR (1) BRPI0812171A2 (es)
DE (1) DE102007025854B3 (es)
MX (1) MX341526B (es)
RU (1) RU2009149409A (es)
WO (1) WO2008148440A1 (es)
ZA (1) ZA200906701B (es)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140062132A1 (en) * 2012-09-03 2014-03-06 Edward Schleichert Impact Beam
US20140062133A1 (en) * 2012-09-03 2014-03-06 Edward Schleichert Impact Beam

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008047800B4 (de) 2008-05-09 2021-11-18 Fft Produktionssysteme Gmbh & Co. Kg Verfahren und Werkzeug zur Herstellung einer Fixierverbindung an formschlüssig gefügten Bauteilen
DE102010005357A1 (de) * 2010-01-21 2011-07-28 ThyssenKrupp Drauz Nothelfer GmbH, 74076 Schweißelektrodeneinheit, Schweißvorrichtung und Verfahren zum Erzeugen einer Schweißverbindung

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0357421A (ja) 1989-07-26 1991-03-12 Matsushita Electric Works Ltd 乾燥機
FR2708491A1 (fr) 1993-08-02 1995-02-10 Renault Automation Dispositif de préassemblage de deux pièces à sertir.
JPH07227677A (ja) 1994-02-21 1995-08-29 Kanto Auto Works Ltd スポット溶接装置
US5611133A (en) 1995-08-15 1997-03-18 Tesco Engineering, Inc. Method of forming a closure panel with hemmed and non-hemmingly joined peripheral portions
WO1999003634A1 (en) 1997-07-17 1999-01-28 Newcor, Inc. Method and apparatus of projection welding
EP1038627A1 (en) 1999-03-25 2000-09-27 Arplas Projects BV Method and device for formation of a projection welding connection for metal sheet
DE19927208A1 (de) 1999-06-15 2000-12-28 Thyssenkrupp Ind Ag Verfahren zum randseitigen Verbinden von Blechen
DE19942390A1 (de) 1999-09-06 2001-08-16 Tuenkers Maschinenbau Gmbh Kniehebelschweisszange zur Verwendung im Karosseriebau
US7531766B2 (en) * 2003-04-07 2009-05-12 Gm Global Technology Operations, Inc. Sheet metal assembly and method to reduce weight

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0357421U (es) 1989-10-03 1991-06-03
CN2099622U (zh) * 1991-06-14 1992-03-25 姜乃武 薄板咬口成型机
DE10227495B4 (de) * 2001-06-19 2004-02-05 Star Fix Gmbh Verfahren zum Verbinden zweier Bauteile
DE102004031290A1 (de) * 2004-06-29 2006-02-09 Adam Opel Ag Ankippsystem für eine Bördelvorrichtung

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0357421A (ja) 1989-07-26 1991-03-12 Matsushita Electric Works Ltd 乾燥機
FR2708491A1 (fr) 1993-08-02 1995-02-10 Renault Automation Dispositif de préassemblage de deux pièces à sertir.
JPH07227677A (ja) 1994-02-21 1995-08-29 Kanto Auto Works Ltd スポット溶接装置
US5611133A (en) 1995-08-15 1997-03-18 Tesco Engineering, Inc. Method of forming a closure panel with hemmed and non-hemmingly joined peripheral portions
US5752304A (en) 1995-08-15 1998-05-19 Tesco Engineering, Inc. Closure panel hemming die
WO1999003634A1 (en) 1997-07-17 1999-01-28 Newcor, Inc. Method and apparatus of projection welding
EP1038627A1 (en) 1999-03-25 2000-09-27 Arplas Projects BV Method and device for formation of a projection welding connection for metal sheet
DE19927208A1 (de) 1999-06-15 2000-12-28 Thyssenkrupp Ind Ag Verfahren zum randseitigen Verbinden von Blechen
DE19942390A1 (de) 1999-09-06 2001-08-16 Tuenkers Maschinenbau Gmbh Kniehebelschweisszange zur Verwendung im Karosseriebau
US7531766B2 (en) * 2003-04-07 2009-05-12 Gm Global Technology Operations, Inc. Sheet metal assembly and method to reduce weight

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140062132A1 (en) * 2012-09-03 2014-03-06 Edward Schleichert Impact Beam
US20140062133A1 (en) * 2012-09-03 2014-03-06 Edward Schleichert Impact Beam
US20140077522A1 (en) * 2012-09-03 2014-03-20 Edward Schleichert Bumper Beam With Losing Plate Joined Using CD Welding (Capacitor Discharge)
US9180760B2 (en) * 2012-09-03 2015-11-10 Magna International Inc. Bumper beam with losing plate joined using CD welding (capacitor discharge)
US9180759B2 (en) * 2012-09-03 2015-11-10 Magna International Inc. Impact beam

Also Published As

Publication number Publication date
US20100089892A1 (en) 2010-04-15
RU2009149409A (ru) 2011-07-20
DE102007025854B3 (de) 2008-10-16
BRPI0812171A2 (pt) 2014-12-02
EP2155414A1 (de) 2010-02-24
CN101674903B (zh) 2013-07-03
CN101674903A (zh) 2010-03-17
KR20100015547A (ko) 2010-02-12
MX2009012693A (es) 2009-12-10
MX341526B (es) 2016-08-24
ZA200906701B (en) 2010-06-30
WO2008148440A1 (de) 2008-12-11

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